Looking for woman who lived with us when she was 2

In 1971, we had a little girl living with us for approx eight months.On March 20 of that year, she turned two years old and we celebrated with a small party.Our daughter was turning four the following month and our son was turning one year old.She was born Shelley Marie Jenkins in Peoria, IL but since we were contemplating adopting her, we were told to give her a different name.After approx eight months, the agency decided she would be better off in a home where there were no other children, so we never did hear anything about the situation again.We have photos of her when she was with us and am sure she would be interested to know her whereabouts on her second birthday.She will be 45 on March 20, 2014.